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Richardson Electronics, Ltd. (NASDAQ: RELL) plans to release its financial results for its third quarter ended March 3, 2012, after the close of business on Wednesday, April 11, 2012. The release will be distributed by Business Wire and will be available on the Company’s website at
www.rell.com.

On Thursday, April 12, 2012, at 9:00 a.m. CT, Edward J. Richardson, Chairman and Chief Executive Officer, and Kathleen S. Dvorak, Chief Financial Officer, will host a conference call to discuss the Company’s third quarter results for Fiscal 2012. A question and answer session will be included as part of the call’s agenda. To listen to the call, please dial 888-339-2688 and enter passcode 96136069 approximately five minutes prior to the start of the call. A replay of the call will be available beginning at 11:00 a.m. CT on April 12, 2012, for seven days. The telephone numbers for the replay are (USA) 888-286-8010 and (International) 617-801-6888; access code 90365880.

About Richardson Electronics

Richardson Electronics, Ltd. is a leading global provider of engineered solutions, power grid and microwave tubes and related consumables, and customized display solutions serving customers in the alternative energy, aviation, broadcast, communications, industrial, marine, medical, military, scientific and semiconductor markets. The Company’s strategy is to provide specialized technical expertise and “engineered solutions” based on our core engineering and manufacturing capabilities. The Company provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair. More information is available online at
www.rell.com.

Richardson Electronics common stock trades on the NASDAQ Global Select Market under the ticker symbol RELL.